Had a pretty screwed up session today, full ring at microlimits. Played against a guy that after more than 50 hands he had literally put money into ALL of them. It didn't matter how much you raised the pot, 3xBB, 4xBB, 6xBB, he'd always call. And he'd almost always bluff the pot hard, playing super aggressively, and would frequently call to the river. He showed down hands like 85o with a board of AKJT9, and he'd do this in position, calling large raises and re-raises. It made no sense whatsoever.

After about fifty hands he'd lost about two and a half buy-ins, but astonishingly I just couldn't score a hit off the guy. He took about two and a half buy-ins off of me as well. Sometimes he'd call down to the river with nothing, while other times he'd flop a full house and play the hand EXACTLY THE SAME. It was impossible to get a read off the guy, and several times I lost to this guy with two pair or better. A few times I even flopped a set and the guy still managed to suck out on me.

So I guess I'm just looking for advice. Standard raises don't work against a player like this, in fact, no amount of raising seems to work at all. It still seemed effective to get into a heads-up situation against him, but once HU what do you do? If you get top pair and top kicker, do you just dump the hand because he might of flopped two pair or a set or something? And when he plays aggressively, do you just dump the hand?